Quote verification

This proves the quote below is recorded by Citatio exactly as displayed and has not been altered since it was committed and anchored. It documents Citatio's crawl observation; it does not imply endorsement by the source platform. The quote links to the original review.

“thank you, this application is very helpful in reducing MB on files”

Checks (re-run on this request)

• ✓ Signature — Ed25519 signature over the record hash, verified against the public key at /.well-known/citatio-signing.json
• ✓ Merkle inclusion — Leaf recomputed through the sibling path to the anchored root
• ✓ Public transparency log — Sigstore Rekor log index 2524422814

Proof data

Record hash (SHA-256)

0b2d2a01adc3543a0c4dff1e003da59b77cfdf7a5445100a65e89e393d70ae72

Signature (Ed25519, base64)

ozemuW9DoIYlaWqHerny5S34pVg5VebEjKdrCJD8PzCYhjGDz0Yyqc7FEm5Br1wtf1iHJu4Zm5YJLMH1XjnsBw==

Merkle root

f8b4f722de05d6805a889681c3818dbde0f5141f0c8463f2762c4a9a02d66a2e

Merkle path

["0b2c283af952f7efcfc1897bd31b02ba50492fd5af48b05c50d882f35b14e3d8","a996c8516735a1e2c2d4c5bb80321f39b1d44ac40923a3f6b1da5b0d83dcfa38","94537d8f563d0bb7ebce1da79c6a3b067f1ad6c870e56c5d99c04c735f9884cf","f8d1137756c061c1462644cd20834631bbdc5085d06c3a418422f7854c22e50c","ec8b3de4e85a0702ba37ce99c8ff12422e248eabff47d8ca604b8e917c4d63d1","43f8a3ef6957880ab72f89e072685b30a0413b10de17dc03d8a879cba9a0b936","10130848f24a31330c1609fe60e514463fa430b02deb274c02a81fa7527440de","74f3d698d1a6833eaccf512970fb374dcd1001c94e8123e1e84df6257494cd19","6a630fa358fa02f86b52ce64ee65957ebd285d58de02674b83dd86606f79fb4e","7700fc07b19bb2aa16f11a8b94974e9b9ba33fd9fae5d96aa0ed88db134947fd","6d8c836ad510c47531d2203326951d62b53cf7589f51f1e6198684bc9a2a5ff2","f01f1a88016d2021c5a10200fdb43dc229a8703904477e2e0791d78a57d84700","826328db0053b998cfac0c22cd6c575c128ecfa4f75e9fd73febd75c9f8ee792","fd074f6b5b50b116ac3330a06f290a8ebec7ed1849b30507ad6694033af6e1ff","1d6688e1c2658422e04ab99dfb5c8345ecb419dd1f8c6994b4040572f5b4ee4d"]

Anchored

2026-08-20

Public log entry

search.sigstore.dev, log index 2524422814 · entry 108e9186e8c5677a9741…

Expected log hash

e042bf60ab37eb8951abb7a408cc8c7483ec875b9606253deec7a67967130ae2 The log entry's spec.data.hash.value must equal this value: the SHA-256 of the Merkle root string above. Recompute it yourself from the root to confirm.

Canonical record

{"dataset_version":"v1787192294432","kind":"published-quote","locale":"en","page":"product:smallpdf/smallpdf-mobile-app/en","quote":"thank you, this application is very helpful in reducing MB on files","rating":5,"review_date":"2026-06-19","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.smallpdf.app.android","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (f8b4f722de05…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. Locally, without any Citatio infrastructure: SHA-256 the canonical record (must equal the record hash), verify the Ed25519 signature against the public key, and fold the hash through the Merkle path (sorted-pair SHA-256) to reach the anchored root.